Floristic Survey of Summer Aspect in Chosen China Clay Pits in Western Bohemia

Abstract

Five diff erent china clay pits in the western part of the Czech Republic were explored and plant species were determined. These chosen pits were: Hájek-western part, Chlumčany, Horní Bříza, Otovice and Podlesí II. China clay pits with active excavation represent a specifi c environment concerning both physical and chemical characteristics. This article is presenting a list of the higher plants which were found within active excavation or former excavation areas. Species with a protection status according to the Czech legislation are presented in more detail. 189 diff erent species have been found in total, including 2 species from category C4 -potentially vulnerable taxa, 6 species from category C3 -endangered taxa and 1 species from the C1 -critically threatened taxa from the Red List of Vascular Plants of the Czech Republic. 28 diff erent species occurred at each of the fi ve sites. Predominant species favour sandy substratum and bare surface.